Yarn package support



W. FLETCHER YARN PACKAGE SUPPORT Nov. 27, 1951 Filed May 28, 1947 N4 INVENTOR. WALTER F LETCHER Patented Nov. 27, 1951 YARN PACKAGE SUPPORT Walter Fletcher, Rome, Ga., assgnor to Celanese Corporation of America,

Wre

a corporation of Dela- Application May 28, 1947, Serial No. 751,088

2 Claims. l

This invention relates to a support for yarn packages and relates more particularly to an improved arbor for supporting a bobbin.

An object of this invention is the provision of an improved arbor structure which is simple in construction, relatively light in weight, eilicient in operation and inexpensive in cost and which will support a bobbin firmly in operative position while permitting ready reception and removal of the bobbin.

Another object of this invention is to provide a novel arbor construction in which the end discs are free of screws or other metal parts, except for the trunnions, which might damage the bobbin or which might hang on the bearing pedestals supporting the same.

Other objects of this invention, together with i certain details of construction and combinations of parts, will appear from the following detailed description.

In the drawing wherein a preferred embodiment of this invention is shown,

Fig. 1 is a cross-sectional view of the arbor of this invention,

Fig. 2 is a cross-sectional view taken along line 2-2 in Fig. 1,

Fig. 3 is a detail view of the rib supporting spider,

Fig. 4 is aperspective view, on a slightly larger scale, of the tube for supporting and .spacing the spiders, and

Fig. 5 is a detail view of a rib, partly broken away, to show the mounting of the resilient strip therein.

Like reference numerals indicate like parts throughout the several views of the drawing.

The arbor of the present invention may be used to support and rotate a cylindrical bobbin in various textile operations, such as thread winding, unwinding, twisting, etc., and is particularly adapted for unwinding thread from bobbins em l ploying apparatus described in United States Patent No. 2,331,454 to Wilfred B. Cooper.

Referring now to the drawing for a detailed description of the arbor of this invention, reference numeral 6 indicates a cylindrical tube, preferably of aluminum or other like material. The surface of said tube is smooth for easy cleaning and is substantially lint free. Fixed within the ends of tube 6, as by means of screws 1, are spiders 8 of any suitable light material, such as wood, synthetic resin or other synthetic material. The spiders 8 are provided with longitudinal grooves 9 spaced circumferentially about said spider. At the base of each groove 9 is a recess Il for the reception of an expansible spring I2.

The tube 6 is provided with longitudinal slots I3 spaced circumferentially about its surface, the spacing being such that the slots I3 coincide with of such size as to extend into the grooves 9 and are attached to arms mounted on the ends of each pair of springs I2, as shown in Fig. 1 which arms are of any suitable material and generally indicated by reference numeral I4. These arms comprise a at portion I5 of a length longer than the length of slots I3 whereby the outward movement thereof is limited. On the surface of each flat portion I5 of arm I4 is a rib I6 which may be integral with the i'lat portion I5 and which extends through the slots I3. The ribs I6 are slotted longitudinally to receive a strip I'I of felt or any other resilient material. The ribs and felts may be tapered at one end thereof, as shown at I8 in Figs. 1 and 5, to facilitate the insertion of the arbor into the bobbin. A substantially circular disc I9 is mounted at one end of the arbor, being held in position by trunnion pin 2| having a screw-threaded shank 22 passing through opening 23 in the center of spider 8, a washer 24 and a nut 25 being employed to hold the trunnion in the spider. At the other end of the arbor is mounted a larger substantially circular disc 26 which is held in position by a trunnion pin 21 held in the arbor by means of a washer 28 and nut 29. The disc 26 serves as a stop for the bobbin. Disc I9 and disc 26 may be made of any suitable material, such as hard ber, for example. As is well known, the trunnion pins 2I and 21 are adapted to be received in suitable slots in upright supports of a device for holding the package. Such a device is shown in Patent No. 2,331,454 above referred to.

As will be apparent from the above description, the arbor of this invention is a unitary structure, light inweight, with no parts likely to be fouled by stray thread. The arbor is easily handled and can be inserted in and removed from a spin bobbin in less time than is now possible with arbors heretofore employed. The arbor adjusts itself to various diameters of spin bobbins and at the same time exerts a uniform inside tension on the bobbin, preventing slippage and further placing a more uniform tension on the thread being processed.

While this invention has been more particularly described and illustrated in connection with a cylindrical bobbin, it will be appreciated that it is equally applicable to other types of yarn packages. v

It is to be understood that the foregoing dctailed description is merely given by way of illustration and that many variations may be made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. An arbor for supporting a yarn package, comprising a tubular body having circumferenthe gl'OOVeS 9 in the Spider 8. The Springs l2 are @o tially spaced longitudinal slots therein, a spider xed at each end of said tubular body internally thereof, each of said spiders having grooves spaced circumferentially about the periphery thereof, the grooves in one of said spiders being in substantial alignment with the grooves in the other of said spiders and the grooves in both of said spiders being in substantial alignment with the longitudinal slots of the tubular body, springs carried in said grooves, armsmounted on said springs, said arms having a length greater than the length of said slots whereby outward movement of said arms is limited, a rib on each arm extending through a longitudinal slot, and a circular disc fastened to each of said spiders, one of said circular discs being of smaller diameter than the yarn package to be supported on the arbor and the other of said discs being of a diameter larger than the diameter of the yarn package so as to cause the same to act as a stop for the yarn package.

2. An arbor for supporting a yarn package, comprising a tubular body having circumferentially spaced longitudinal Vslots therein, a spider iixed at each end of said tubular body internally thereof, each of said spiders having grooves spaced circumferentially about the periphery thereof, the grooves in one of said spiders being in substantial alignment with the grooves in the other of said spiders and the grooves in both of said spiders being in substantial alignment with the longitudinal slots of the tubular body, springs carried in said grooves, arms mounted on said springs, said arms having a length greater than the length of said slots whereby outward movement of said arms is limited, a rib on each arm extending through a longitudinal slot, a circular disc carried by each of said spiders, one oi' said circular discs being of smaller diameter than the yarnpackage to be supported on the arbor and the other of said discs being of a diameter larger than the diameter of the yarn package so as to cause the same to act as a stop for the yarn package, and a trunnion pin passing through each of said discs and spiders for holding said discs on said spiders.

WALTER FLETCHER.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 1,631,835 Schubert June 7, 1927 2,274,681 Fletcher Mar; 3, 1942 2,381,301 Markle Aug. 7, 1945 n FOREIGN PATENTS Number Country Date 233,712 Great Britain Oct. 8, 1925 

